Question

calcule:
A) 1/3 + 5/2 + 7/14
B)1/3 + 5/2 - 7/14​

Answer 1

Olá...

Resolução:

a)

1/3 + 5/2 + 7/14

1/3 + 5/2 + 1/2

1/3 + 5 + 1/2

1/3 + 6/2

1/3 + 3 ⇒ mmc = 3

1 + 9/3

10/3

b)

1/3 + 5/2 - 7/14

1/3 + 5/2 - 1/2

1/3 + 5 - 1/2

1/3 + 4/2

1/3 + 2⇒mmc = 3

1 + 6/3

7/3

Bons estudos.

Answer 2

Resposta:

Explicação passo-a-passo:

A) 1/3 + 5/2 + 7/14 (:7)/(:7)

= 1/3 + 5/2 + 1/2

= 1/3 + 6/2

= 1/3 + 3

= (1+3.3)/3

= (1+9)/3

= 10/3

______________

B)1/3 + 5/2 - 7/14​ (:7)/(:7)

= 1/3 + 5/2 - 1/2

= 1/3 + 4/2

= 1/3 + 2

= (1 + 3.2)/3

= (1+6)/3

= 7/3